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一台SH200-3A型挖掘机已工作8500h,单独操作每个动作都正常。进行复合动作操作时,若回转和动臂同时动作,也没有问题;回转和铲斗同时操作时,也没有问题;当斗杆和动臂同时操作时,斗杆比平时慢;当回转、斗杆和动臂提升同时操作时,又和平时差不多。因单独操作时各动作基本正常,可判断先导油路没问题;行走中无明显跑偏现象,可判断两泵的输出流量,没有很大差
A SH200-3A excavator has been working 8500h, separate operation of each action are normal. There is no problem if the swing and the boom move simultaneously when the compound action is operated. There is no problem when the swing and the bucket are operated at the same time. When the stick and the boom are operated at the same time, the stick is slower than usual. When lever and boom lift are operated at the same time, they are about the same as usual. Due to the normal operation of the separate operation, you can determine the pilot oil is no problem; walk no obvious deviation phenomenon, can determine the two pump output flow, there is no great difference